Re: Linux Kernel 64 compile on Knoppix 6.7

[Gilles van Ruymbeke <ruymbeke@gmail.com>]

Hi Ming-Ching, Klaus
Thank you for your response.
I will try the ARCH override but I did not need to use it on previous release
of Knoppix as the 6.5 version was ok. Also reverting to gcc 4.4 solves the problem.

And This does not explain the mismatch between the installed gcc (4.6) and what
synaptic (apt-get database) think that is installed (4.4).

The "amd64-libs-dev" install also adds all the dependencies as multi-lib,...

I did run knoppix as poor man install, install the 64 gcc/libs and compile
the kernel (obviously without reboot) in order to create my new minirt
and cloops loop back files for my 64bits live patch iso boot.


Good point about the /lib64 not being part of the unionfs.
I will add it in my minirt init script. By the way I much prefer using
"mout bind" instead of soft links (from the root to the /UNIONFS) as some installer

like to use the real path and include the /UNIONFS in their install/config files.
Best Regards,
Gilles

On Mon, Aug 15, 2011 at 04:56:47PM -0700, Ming-Ching Tiew wrote:
>    --- On Mon, 8/15/11, Gilles van Ruymbeke <ruymbeke@gmail.com> wrote:

> 
>    > Trying to compile the 64 bits kernels (from your sources) still gives me
>    a 32 bits binary.
> 
>    Did you add "ARCH=x86_64" to all your compilations of kernel/modules ?

> 
>    eg
> 
>             $ make ARCH=x86_64 bzImage
>             $ make ARCH=x86_64 modules
>             $ sudo make ARCH=x86_64 modules_install
> 
>    Also did you install the needed multi-lib compiler and libraries on a

>    harddisk install or on a "poor-man" install with persistency ? If you
>    installed them on a "poor-man" install, the /lib64 libraries will not
>    survive a reboot because the minirt.gz did not put that into the

>    persistent store. A minor fix to minirt.gz is needed to include lib64 into
>    the UNIONFS.

Good point. New directories in / will not be stored automatically into
/UNIONFS, and minirt.gz/init currently ignores everything but boot etc

sbin var lib opt root usr bin. The quick fix is copying /lib64 to
/UNIONFS with persistent overlay, and add lib64 to the for loop which
links the toplevel directories in init inside minirt.gz.

-Klaus

On Mon, Aug 15, 2011 at 2:20 PM, Gilles van Ruymbeke <ruymbeke@gmail.com> wrote:

Hi Klaus,
The 32 bits version of Knoppix 6.7 works great but I have some problems with the 64 bits version:
After installing the "amd64-libs-dev" package (+ 12 dependencies) I still cannot compile 64 bits binaries
(This was working just fine with Knoppix 6.5)
According to synaptic the installed version of gcc is 4.4 but "gcc --version" displays 4.6.
After replacing the /usr/bin/gcc link from gcc-4.6 to gcc-4.4, 64 bits compile now works,
but I cannot upgrade gcc from 4.4 to 4.6, even after trying to upgrade or remove before re-install.
Trying to compile the 64 bits kernels (from your sources) still gives me a 32 bits binary.
And obviously the vmware tools kernel modules do compile but do not load into the 64 bits kernel.
What version of gcc did you use to compile your kernels ? Did you use Knoppix to compile it ?
Any idea or suggestion ? Am I missing something obvious ?
Thank you again for your great work and Knoppix releases.
Best Regards,
Gilles